#include "header.h"

/* parses input file segment into Matrix */
int
mcreator(Matrix * pA)
{
    Matrix A;
    int    i, n, m, size;

    /* determine size of matrix */
    scanf("%d", &n);
    scanf("%d", &m);
    size = m*n;

    /* record matrix data */
    float * arr;
    arr = malloc(size*sizeof(float));
    for(i = 0; i < size; i++)
    {
        scanf("%f", &arr[i]);
        //printf("%f\n", arr[i]);
    }

    /* store recorded data */
    pA->n = n;
    pA->m = m;
    pA->p = arr;
    A = *pA;
    printf("A.p[0] = %f\n", A.p[0]); // array successfully stored
}

/* reads Matrix */

/* TODO: Accessing array stored in matrix causes
 * segementation fault in this function, even though
 * accessing the array stored in matrix works fine at the
 * end of mcreator (line 29).
 */
void
mreader(Matrix *pA)
{
    Matrix A = *pA;
    int i, j, m = A.m, n = A.n;
    float *arr = A.p;

    printf("arr[1] = %f\n", arr[1]); // Segmentation Fault

    for(i = 0, j = 0; i < m*n; i++)
    {
        if(j < m)
        {
            printf("%f\t", arr[i]);
            j++;
        } 
        else
        {
            printf("\n");
            j = 0;
        }
    }
}

/* parses input file segment into vector */
Vector *
vcreator(void)
{
    Vector v, *pv;
    int j, size;

    /* get vector size */
    scanf("%d", &size);

    /* get vector data */
    float * arr = malloc(size * sizeof(float));
    for(j = 0; j < size; j++)
    {
        scanf("%f", &arr[j]);
    }

    /* store vector data */
    v.n = size;
    v.p = arr;

    pv = &v; 
    return pv;
}

/* reads Vector */
void
vreader(Vector *pv)
{
    Vector v = *pv;
    int i, size = v.n;
    float * arr = v.p;

    for(i = 0; i < size; i++)
    {
        printf("v[%d] = %f\n", i, arr[i]);
    }
    printf("\n");
}

/* frees Vector memory */
void
vdestroy(Vector *pv)
{
    Vector v = *pv;
    free(v.p);
}

/* frees Matrix memory */
void
mdestroy(Matrix *pA)
{
    Matrix A = *pA;
    free(A.p);
}